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branch-3.0: [fix](nereids) EliminateGroupByConstant should replace agg's group by after removing constant group by keys #49473 - #50043
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… after removing constant group by keys (#49473) ### What problem does this PR solve? Issue Number: close #xxx Related PR: #xxx Problem Summary: ### Release note ```sql SELECT IF( t.`gender` IN ('女'), ( TIMESTAMPDIFF( YEAR, NOW(), NOW() ) ), 1 ) AS x0, TIMESTAMPDIFF( YEAR, NOW(), NOW() ) AS x1 FROM t1 AS t GROUP BY x0, x1; ``` after EliminateGroupByConstant, this sql will be rewritten to ```sql SELECT IF( t.`gender` IN ('女'), 0, 1 ) AS x0, 0 AS x1 FROM t1 AS t GROUP BY IF( t.`gender` IN ('女'), ( TIMESTAMPDIFF( YEAR, NOW(), NOW() ) ), 1 ) ; ``` The select expression and the group by expression is different, and will report error in normalizeagg. This pr changes using the foldmap rewrite the group by expresssion, and after change the sql after EliminateGroupByConstant become: ```sql SELECT IF( t.`gender` IN ('女'), 0, 1 ) AS x0, 0 AS x1 FROM t1 AS t GROUP BY IF( t.`gender` IN ('女'), 0, 1 ) ; ``` the select expression and the group by expression becomes same.
Thearas
commented
Apr 15, 2025
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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Thearas
commented
Apr 15, 2025
Contributor
run buildall |
ContributorAuthor
PR approved by at least one committer and no changes requested. |
ContributorAuthor
PR approved by anyone and no changes requested. |
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Cherry-picked from #49473